As of 8:30 a.m., the brush fire had scorched 1,584 acres of canyons and undeveloped space around neighborhoods of multi-million dollar homes and mansions. While no structures have burned so far, Cal Fire officials warned residents that anyone living in the proximity of the Bernardo Fire should be on high alert.

“The wind is coming up again. We know how difficult, how windy and how hot it’s going to be,” said San Diego Mayor Kevin Faulconer.

"Weather conditions right now give us grave concern," said Cal Fire's Incident Commander Ray Chaney. "We're talking single digit humidties, gusty Santa Ana winds. So, it does put us on edge and that's why we have a robust force of engine companies and air assets on the line today."

San Diego County Sheriff's deputies made 22,000 contacts to email addresses, cell phones and landlines through their alert system Tuesday. Of those, 5,000 were in the county and 17,000 in the San Diego city area.

Santaluz resident Kara Hansen was getting her hair done when she got a call about the fire. She had time to grab only her family's passports and dogs before leaving to find her 8-year-old son, whose school had been evacuated.

“Anybody who comes out here and drives around Santaluz to see how close it got to homes, it’s unbelievable,” she said.

In additon to fighting the flames, officials are working to ensure areas the blaze has already crossed pose no ongoing danger. Blackened dirt may look safe however firefighters say there may be hot spots beneath. Fire crews will be working to dig the dirt up to look for embers that may be buried up to two inches deep.

Firefighters will be churning the dirt and wetting the dirt down. If winds pick up the dust and dirt, embers can be spread to another area and spark another fire.

“There are a few little areas down along the river bottom that didn’t burn real clean because it’s still a little moist there,” said Barona Fire Chief Ken Kremensky.

Several minor injuries have been reported. The cause was still under investigation.